Liberek Iwona, Kołodziejczyk Wojciech, Szaflik Jacek P, Szaflik Jerzy
Katedry i Kliniki Okulistyki II Wydziału Lekarskiego Akademii Medycznej w Warszawie.
Klin Oczna. 2006;108(4-6):214-9.
To assess the efficacy of intraocular lens power calculation in patients with previous corneal refractive surgery.
Retrospective analysis of patients after laser refractive procedures, in whom cataract removal with phacoemulsification method was performed. Corneal power, which in conventional measurements after refractive surgery tends to increase value and results in postoperative hyperopic shift, were calculated with five methods, and the results were compared. To asses IOL power SRK/T formula was used.
Mean spherical equivalent three months after procedures according to target refraction in examined patients ranged from -1.00 to +1.75 D. The difference between obtained and target refraction in 55% of patients ranged from -0.50 to +0.50, and in 77% from -0.75D to +0.75D. Best results were obtained in calculations performed with Rossa method. The least effective appeared to be traditional IOL power calculation method without correcting factors.
In patients after laser correction of myopia, value of the measured keratometry should always be corrected. The most effective is Rosa method in combination with SRK/T calculation algorithm.
评估既往接受角膜屈光手术患者的人工晶状体屈光力计算的有效性。
对接受激光屈光手术且采用超声乳化法摘除白内障的患者进行回顾性分析。采用五种方法计算屈光手术后常规测量中趋于增大且会导致术后远视偏移的角膜屈光力，并比较结果。使用SRK/T公式评估人工晶状体屈光力。
根据检查患者的目标屈光度，术后三个月平均球镜等效度范围为-1.00至+1.75D。55%的患者获得的屈光度与目标屈光度之间的差异范围为-0.50至+0.50，77%的患者差异范围为-0.75D至+0.75D。采用罗萨法进行的计算取得了最佳结果。最无效的似乎是未使用校正因子的传统人工晶状体屈光力计算方法。
在近视激光矫正术后患者中，所测量的角膜曲率值应始终进行校正。最有效的是罗萨法与SRK/T计算算法相结合。
